[catlover]

Yes, there are leagues, but I would call them "status hierarchies". Your position in the status hierarchy is based on a number of factors, many of which are out of your control, such as the DNA content of your parents' genes. A prospective mate estimates your position in the hierarchy relative to hers (or his), and determines whether or not you are "acceptable". Of course no one admits to doing this. But if you have any doubts, just observe a school lunch room for a few minutes.

Now it is important to note that not everyone's algorithm for determining position in the hierarchy is identical; we each have different tastes and preferences, and this is what gives those of us on the low end of the scale some hope. But, unfortunately, there are some aspects of the process that I would consider to be almost universal.